By laura augusta



F. H, OVEHLKE. DECD.

L. A. PEASE, EXECUTRIX- FURNACE. APPLICATION FILED APR-1|. HUB.

gmi gm 2 Patented June 24,1919.

3 SHEETS-SHEET I- F 2' 1 INVEN TOR F. H. OEHLHE SE L. A. PEASE. EXECUT mam- .05.

APPLICATIEI! FILED APR. H, i918 I Patented June 24; 1919,.

f Y SSHEETS-SHEET 3.

a (Q T UNITED T ES PA ENT oFrIoE.

rnnnlimcx H. OEHLKE, DECEASED, LATEoF-RIDGEVILLE, OHIO, 'BY'LAURA AUGUSTA PEASE, EXECUTRIX, or RIDGEVILLE, OHIO, ASSIGNOR T BER'lI-IA M. OEHLKE, 0F

WESTDOVER OHIO.

. Application flled April 11, 1918. Serial N 'o. 227,876.

To all whom it may concern.

Be it known that FREDERICK H. OErILKE,

who was a citizen of the United States, and who resided at Ridgeville, in the county of Lorain. and State ofOhio, invented certain new and useful Improvements in Furnaces; and I, LAURA AUGUSTA PEAsE, his executrix,

do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled 1n the art to which it appertains to make and use the same.

her of such similar parts.

The invention relates to furnaces for heating buildings and the like, and is especially adapted for use ,inconnection with such heating systems as those in which hot water is employed to-carry the heat from the furnace to the radiators or other distributing means.

The principal object of the .invention is to increase the efiiciency of furnaces of the type in which a plurality of fuels of different character is employed.

Another object of the invention is to provide a. furnace in which the different fuels may be used individually or to ether, without interferenceone with the ot er.

Another object of the invention is to provide a furnace constructed of individual parts, which can readily be assembled and some of whose parts are duplicates of each other, so that the size ofthe furnace may be readily varied by using any suitable num- Another object of the invention is to produce a furnace 'whose'parts may be readily and conveniently removed and renewed.

Cheapness in construction, stabilit and durability are other objects of the invention.

These and other objects of the invention, as well as the invention itself will be more readily understood from a description of an embodiment of the invention.

Figure 1 is a vertical section through an embodiment. of the, invention taken along the line 11 in Fig. 2.

Fig. 2 is a vertical section of the embodiment illustrated in the drawing taken along the line 2-2 of Fig. 1. f

Fig. 3 is a section taken along the line 3-3 of Fig. 1.

Fig. 4 is a section taken along the line H of Fig. 1.

FURNACE.

Specification of Letters Patent.

The frame is provided with a water jacket 7, forming. a water space 8 all about the side walls of the body partof the furnace, which, in the embodiment shown, is rectangular in cross section. As will be seen, the body part of the furnace is built up of a plurality of sections, here shown at 51, 52, '53 and 54.

Suitable means are employed for connecting these sections together, here illustrated as flanges 9 and 10, which are connected together by any suitable means, such as bolts 11. The'interior walls are provided with cooperating teeth 12 and flanges 13 arranged to fit together when the parts are assembled, making a sealed, water-tight joint.

A tortuous passage-way is shown at X, which consists of a flat conduit zigzagging back and forth across the frame as it ascends from the bottom to the top thereof. Thisconduit extends clear/across the furnace, as illustrated in Fig. 2, dividing the same into two passage-Ways O and O, for the gases, etc. The points 15 of the angles of the conduitX do not join the interior walls of the furnace, but approach only near enough to leave-suitable spaces 16 through which the gases, etc., from the fire chambers pass upwardly about the water inclosing parts to thetop of the furnace.

he sections of the conduit X pass diagonally across the sections of the furnace between the points a and b, so that the productsof combustion rising strike full against the Walls of conduit X, as indicated at C,

and then ascending along same, as indicated.

Openings 17, 17 17 and 17 are pro vided in the'ends of the conduit X, through which such conduit is placed in communication with the water jacket. The conduit Y the chamber.

chamber through an opening 20 therein. Means, such as pipes 21, are provided for feed chamber communicates with the water jacket through openings 3 in the ends of The conduit X enters the supplying water to the chamber Y. -A distribution chamber V is shown in the top of the furnace,- communicatin with the conduit through an opening 22 therein.

Means, such as pipes 222, are provided for conveying the heated water to the radiators or other'fdistributing means which are not shownjin the drawing, but 'whichare well understood.

Hollow baffles Y from the interior wall of the furnace into the angles between the zig-zagging parts of the conduit.

The bottom part or section 51 of the fur- These bafiles communicate through openings y with the water space 8.

the size of the furnace, as desired. A The sections are made of suitable matenal, such as fere with the other.

adapted to raise the water to a certain temperature and when both are burned, the heat from each cooperates with the other to raise are shown extending nace is divided into two fire chambers by the walls of the chamber Y. One of these chambers S is adapted for the burning of-' coal, wood or the like and a coal grate s is illustrated therein.

At is shown an opening normally closed by a door 8 for the introduction of fuel to the chamber S, and'a't 31'is shown an opening normally closed by a door 8 through which the ashes, etc. may be withdrawn. At a is shown a door controlling the supply of air to the chamber S and at s, and 8 means by which the door' may be opened and closed. At T is shown the ash pit.

At R is shown another fire chamber, su table for burning as. An opening is provided throughwh1ch entry may be had to the chamber R, normally closed by a suitable door. At 73, 1' and 1' are shown burners-in the chamber R. A duct 32 is employed for supplying gas to the burners.

-The hot gases, etc. from the chamber S pass upwardly in the .direction of the arrows, and the gases from the chamber R, upwardly, following the course indicated by the other arrows; It will be seen that the hot gases,

baffles on one side of the furnace, illustrated by the baffle Y, and three of the walls of ter to the heat of the gases is common to the plurallty of heating systems employed. It Wlll be apparent that the art 53 may be omitted from the furnace and the part 54" reversed and the bottoiii thereof joined to the furnace, a chamber for burnin the other side of the tortuous passage X,

the water-jacketed sides of the furnace. The gases, etc., from the-chamber S esca e i .through an op1ening'34 and those from t e chamberR, t rough an opening 35, where they are conveyed away by suitable means, such as conduits, one of which is illustrated at 36 in Fig. 2.

the other baffle or set of baflles and three of the top of the part 53."

These details and this embodiment have been shown to illustrate the invention. It will be apparent that many departures may be made therefromwithout departing from the spirit of the invention.

Claims: I

1. In a furnace, the combination of a frame built up of sections, a Water jacket and space for water all about the sides of 4 solid fuel in one side of the frame, a cham er for burning gas in the other side of the frame, a chamber for water between said fuel and gas burning chambers and extending clear across the furnace interior, said water chamber joining the opposite side Walls of the furnace where it communicates with the water jacket, a conduit for water joining at its lower end with said water chamber and zigzagging alternately above said fuel and gas F burning chambers to tlie top of the furnace, etc., from the chamber S engage one side of the tortuous passage X, both-sides of the said conduit extending from side to side of the Interior of the furnace and joining the side walls thereof where it communicates the interior walls of the furnace into the an- It will be appreciated that duplicates of the sections 53 may be'inserted between the sections 52 and 53 or 53 and 54, thus varying gles formed by the conduit, said baflies join- 1ng with the water jacket through openings provided 1n the end and sides thereof, a top part for the furnace, a water distribution gases as they ascend. It will be seen that portions of the system for exposing the wachamber in the top partprovided with an 7 opening at which the conduit is joined to said chamber and through which it commeans throu hv whichis is distributed .from' the distribution chamber.

2. In a=fi1rnace, the combination of plurality of fire chambers, a water jacket forming a Water-i space about said furnace, atortuous passage for water extending from top tobottom of the furnace and from side to side thereof,-;=a plurality of hollow battles in the angle's in said passage, the walls or the water space being provided with openings through which the passage, the baflles and the water space are placed in communication, atop part for said furnace and means through which water is introduced 1 and Withdrawn from said water space. 3. In a furnace, the combination of a main inclosing shell, an inner shell spaced therefrom, means'for joining together said shells at the top and bottom to form a chamber for heating-fiuid,-a zigzag passageway extending vertically inside the inner shell and joined thereto at the sides, the channel in I said passageway communicating at the sides with said fluid chamber, said inner shell having hollow extensions on each side projecting inside the angles of the passageway but spaced therefrom to form flues for hot 0 gases, means for feeding fluid into the bottom of the passageway, andmeans whereby 1 bottom on the other side, whereby the pasinclosing shell, an inner shell spaced there it may escape'at'the top thereof, a fire grate at the bottom of said shells on one side of said passageway, and a gas burner atthe 35 sageway completely separates the two and forms separate paths for the products of combustion from each.

4L In a furnace, the combination of a main 4 0 from, means for joining together said shells atthe top and bottom to form a chamber for heating-fluid, amiddle passageway extendin vertically inside the inner shell and said passageway communicating at the sides with said fluid chamber, said inner shell having hollow extensions on each-side proj jecting inside the angles of the passageway but spaced therefrom to form flues for hot '50 gases, means for feeding fluid into the bottom of the passageway, and means whereby it may escape at the top thereof, a fire rate at the bottom of said shells on one si e of said passageway, and a gas burner at the jomed thereto at the sides, the channel in 45v 

